Find information about the service you want to rebuild.
By running openioclusterlistrawx you will get a list of all rawx service IDs accompanied by their volume paths.

Verify that the service was automatically scored to zero by running openioclusterlistrawx.

If not, lock the score of the targeted rawx service to zero by running openioclusterlockrawx<RAWX_ID>, where RAWX_ID is the network address of the service (ip:port).
This will prevent the service from receiving upload requests, and will reduce the number of download requests.